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    <script>
        // 求 1 到 100 之间（包含 1 和 100 ）偶数的和，并且输出结果
        let sum = 0
        for (let i = 0; i <= 100; i++) {
            if (i % 2 === 0) {
                sum += i
            }
        }
        console.log(sum)

    </script>
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